WeatherPiArdinuo V3 w/Grove (aka Weather Board) connectors - Interface board for Weather Instruments for Raspberry Pi/Arudino Includes Open Source Software for Arduino and Raspberry Pi Includes on-board Barometer and Temperature sensors. Includes DS3231 RTC. Supports a variety of I2C devices: Lightning Detector / FRAM Storage / SwitchDoc Labs DS3231 RTC / Adafruit HTU210 Humidity Sensor / Adafruit ADS1015 ADC Supports Anemometer / Wind Vane / Rain Bucket (SwitchDoc Labs WeatherRack, Argent Data Systems Weather Sensors and Sparkfun Weather Meters) Software provided for all supported sensors and for all supported I2C devices (including Lightning Detector!) Full Documentation and Software on www.switchdoc.com